Well, in the Office for regulating CO2-vs-O2 it's competing with the timeless, very-low-maintenance and low-cost combo of keeping-plants-and-occasionally-opening-a-window.
If the windows and the HVAC aren't talking, you end up trying to heat or air condition the outside world. This is both futile and expensive.
Also, it takes about eight trees to absorb the CO2 emitted by one human. The contribution of houseplants is tiny. Especially since they usually don't get full sunlight.
>>> If the windows and the HVAC aren't talking, you end up trying to heat or air condition the outside world. This is both futile and expensive.
That's an argument to be made to the hotel or office owner. The user has no control on the HVAC and is forced to open the window or turn on electric heaters to cancel it.
Also, it takes about eight trees to absorb the CO2 emitted by one human. The contribution of houseplants is tiny. Especially since they usually don't get full sunlight.